Plate Tectonics Vocabulary
Across
- 3. point of Earth's surface directly above an earthquake's focus
- 5. a pulling force
- 9. core liquid layer of the Earth's core
- 10. powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus
- 13. boundary between two plates that are sliding past each other
- 14. outermost rigid layer of the Earth
- 17. opening in Earth's surface that often forms a mountain when layers of lava and volcanic ash erupt and build up
- 19. soft layer of the mantle
- 20. outermost layer of the Earth
- 21. the bending of rock layers
Down
- 1. a break in the Earth's crust
- 2. single large landmass made up of all the continents connected together that broke apart 200 million years ago
- 4. boundary between two colliding plates
- 6. boundary between two plates moving away from each other
- 7. a region where an oceanic plate sinks down into the athenosphere
- 8. theory that continents drift apart
- 11. vibrations caused by breaking rocks along faults
- 12. layer between the crust and the core
- 15. core solid, dense center of the Earth
- 16. in an earthquake, the point beneath Earth's surface where energy release occurs
- 18. a squeezing force